1. Limnologists have long acknowledged the importance of phosphorus (P) in determining the organism biomass and productivity of lake ecosystems. Despite a relatively large number of studies that have examined P cycling in lake ecosystems, there remain several substantial methodological issues that have impeded our understanding of P cycling in limnetic plankton communities. Two critical issues ...

Phytoplankton chemotaxonomic distributions are examined in conjunction with taxon specific particulate biomass concentrations and phytoplankton abundances to investigate the biogeochemical consequences of the passage of an autumn storm in the northeast Atlantic Ocean. Chemotaxonomy indicated that the phytoplankton community was dominated by nanoplankton (2–20 lm), which on average represented 7...

the kalat formation is one of units in the kopet dagh sedimentary basin and so far have been studied by other fossils (case study) (palynomorphs, calcareous nanoplankton and foraminifera). according to the important ostracoda in diagnosis paleoecology and paleoenvironment, in this study, investigated ostracoda in shale units of the kalat formation in chahchaheh section have been studied for the...

Abstract Detailed in situ vertical and temporal distribution of appendicularians, marine snow, fecal pellets, nano- microplankton were recorded simultaneously with environmental data the San Jorge Gulf, Argentinean Patagonia (45°–47°S). Data taken at a fixed station over 36 h February 2014 an autonomous Video Plankton Recorder FlowCAM®. The water column was thermally stratified pycnocline ~ 40 ...